The first episode of menstrual bleeding is called:

A) PMS.
B) menarche.
C) menopause.
D) amenorrhea.
E) female climacteric.


Answer: B) menarche.

Anatomy & Physiology

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In adults, erythropoiesis exclusively takes place in

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The substance that surrounds the brain and is very similar to blood plasma minus proteins is

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Which hormones are formed from chains of amino acids?

A. Proteins and biogenic amines B. Biogenic amines C. Steroids and biogenic amines D. Steroids E. Proteins

Anatomy & Physiology